Sheet-metal door.



l. ANDERSON,

SHEET METAL 000R, APPLICATKOIN HLED 05c. 30. 1914 Patented Juiy 13 L915.

2 SHEETS-SHEET 1.

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JOHN CONRAD ANDERSON, OF JAMESTOWN, NEW YORK, ASSIGNO OF ONE-HALF TO AUGUST W. CARLSON, 0F JAMES'EOW'N, EEW YORK.

SHEET-METAL 1309B.

Specification of Ictters Patent.

Patented July 13, 1915.

Application filed December 30, 1914. ,Serial No. 879,636.

.To all whom it mag/"concern:

Be it known that I, JOHN CONRAD ANDER- soN, a citizen of the United States, residing at the city of Jamestown, in the county ofthe sheet metal parts so that a workman can set up the door quickly and with little or no hand work; and the invention consists in the novel features and combinationshereinafter set forth and claimed.

In the drawings, Figure 1 is an elevation of the door. Fig. 2 is a sectional view at line X X in Fig. 1, showing the manner of assembling the panels and cross rails. Fig. 3 is a perspective view of a portion of the tubular stile, showing the section at line panel plates in the stiles.

Y Y in Fig. 1, and the manner of attaching the stile to the panel and of holding the Fig. 4 is a perspeetive View of a portion of the panel plate showing the spaced slots therein for attach .ing the stiles, cross rails and channel strips.

Figs. 5 and 6 show prospective views of the opposite sides ofthe channel strip for 'holding the panel plates a spaced distance apart.

Fig. 7 1s a perspective View of a portion of one edge of the stile or cross rail, showing the molding with a series of spaced lugs thereon. Figs. 8 and 9 show perspective views of the opposite sides of the middle cross rail with the molding and lugs thereon for attachment to the panel plates.

Like numerals of reference refer to corresponding parts in the several views.

The numeral.l0 designates the stiles; the numeral 11 the top cross rail; the numeral 12 the bottom cross rail; and the numeral 13 the middle cross rail.

The stiles 10 are made from single plates I of sheet metal formed in the tubular shape with the molding 14 on the inner edges. The top rail 11 and the bottom rail 12 are formed similar to the stiles 1Q, being each made from a sheet metal plate'in the tubular form with the molding 14 on each of the inner edges. 1

The sheet metal panel is made of two sheet metal plates 15 placed a spaced distance apart with asbestos filling 16 therebetween. The edges of the sheet metal panel plates 15 are turned outward at right angles in flanges 17 which fit within the angles formed by the molding 1% thereby firmly holding the plates 15 in place, the flanges 17 for the top and bottom cross rails 11 and 12being-cut short to provide an opening 18 for the molding at the lnitered corner Joint. The panel plates 15 preferably extend "from the top cross rail 11 to the bottom. cross rail 12, and

the middle cross rail 13 is attached thereto in two pieces on each side of the panel plates 15, the two parts of the middle cross rail 13 having the molding 1 1 on its lengthwise edges. 7

In order to attach the molding 14: to the panel plates 15 for the cross rails and stiles surrounding said panel 15, a series of spaced slots 19 are provided in both of the plates 15 and opposite one another, that is, the two plates 15 are made precisely alike so that the same die or set of dies will form the plates and when formed they are turned with the flanges 17 extending in opposite directions.

. The edges of the molding 14 on the stiles and cross rails are provided with a series of hooked lugs 20 which are spaced to corre spond to the spaced slots 19.

The opening 21 within the hooked extension of the lug 20 is proportioned to fit closely onto the sheet metal. plate 15 so that when the lugs 20 are inserted through the slots 19 the stiles and cross rails may be moved endwise by a slight tap of the hammer suflicient to place the ends of the slots 19 adjacent to the bottoms of the notches 21 thereby drawing the plates 15 into close firm union with the edges of the molding 14, after which said plates 15 are fixedly held in this close union by one or two spot welds preferably through the flanges 17 and the stiles or cross rails.

It-is obvious that a single spot weld through-the end of one of the flanges 17and a. stile and cross rail will rigidly lock-all the lugs 20 of that plate in their binding position in the slots 19, and that the entire door may be. struck out with suitable dies In order to give added rigidity to the construction and to hold the sides of the stiles and cross rails at an exact spaced distance apart, a channel strip 22 is provided having spaced lugs 20 along each flanged edge and a series of spaced slots 19 are. provided in the vflanges 17, as shown in Fig. a. The channel strips 22 fit closely upon the panel plates 15 and after the lugs 20 are inserted in the spaced slots 19 in the flanges 17 of both the plates 15, the channel strips are driven tightly 'to place by a light tap of the hammer and a spot weld through the end of the channel plate 22 and the flange 17 of the plate-15 locks these parts rigidly in place. It islapparent that the position of the channel strips lengthwise of the stiles and cross rail holds the sides of said stiles and cross rails an exact distance apart and also hold the panel plates 15 in their spaced relation to one another. It is also obvious that the panel plates 15 might be held apart the spaced distance by other means than the channel strips 22; as for example, the filling strips 16 would serve a good purpose in holding said panels plates the spaced distance apart and the channel strips 22 in certain forms of doors might be eliminated without seriously weakening the same. The ends of the cross rails are preferably attached to the edges of the stiles by welding.

I claim as new:

1. A. hollow sheet metal door comprising tubular sheet metal stiles and cross-rails crossrails.

having the opposite edges turned toward one another, spaced panel plates extending between said inner edges and turned outward against the.inner sides of said stiles and cross-rails, means for holding said panel plates a spaced distance apart, said spaced, panel plates each having spaced slots in line with said inner-edges, and a series of. spaced struck outhooked lugs on said inner edges and in the same plane therewith for insertion through said spaced slots into holding engagement with said panel, plates by endwise movement of said stiles and 2; A hollow sheet metal door comprising spaced panel plates, tubular stiles and top and bottomcrossrails having molding on their inner edges, the edges of said panel plates turned outwardly in angular flanges 1 to fit within the corners of said tubular stiles and top and bottom crossrails for spot welding a cent to said molding, saidpanel plate having spaced slots therethrough inline with the inner edges of said molding, and struck out hooked lugs on the:

inner edgesv pf' said molding similarly spaced for engagement in said spaced slots to. unite said parts by endwise movement in relation to one another; a

3. A hollow sheet' metal door comprising spaced panel plates having spaced slots in line with and a spaced distance from their outer edges, tubular stiles and top and bottom crossrails having molding on their'inner edges, the edges of'said panel plates;

turned outwardly in angular fianges'to fit-z within said tubular stiles and crossrails adjacent to said molding and having spaced}v slots therethrough, hooked spaced lugs on the inner edges of said molding for holding engagement in said spaced panel plates, and channel plates having spaced hooked lugs along the edges for engagement in said spaced slots in said angular flanges to hold said panel plates a spaced distance apart.

i. A hollow sheet metal door comprising tubular stiles and top and bottom crossrails having inturnedmolding along their inner edges and spaced hooked lugs on the edges of said molding, oppositely placed panel plates having slots therethroughcorrespondingly spaced to said spaced lugs to re?- ceive the same'in holding engagement, the edges of said panel plates turned outwardly in angular flanges to fit within the corners of plates having spaced slots crosswise thereof; 1 and channel shaped sheet metal ,crossrails":

having molding and spaced hooked lugs on the edges thereof to engage in said spaced slots crosswise of said panels on the outer sides thereof to form crossrails.

In testimony whereof I have aflixed my signature in the presence of two witnesses.

JOHN CONRAD ANDERSON.

- Witnesses:

H. A. SANDBERG, ARTHUR O. MORSE. 

